So having learned so much on flyer talk over the years I haven’t flown multi airline itinerary in some time as when they go wrong they go terribly wrong. But . I’m looking at a flight from SFO-ANC mixing UAL and DELTA with perfect times and type of aircraft and price - any pitfalls I should be aware of like lost bags, cancelled flights? They interline luggage so I’m not too worried about that unless something goes wrong. Thanks for any info!